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Pre-positioned filter cleaning method

A technology of pre-filter and filter screen, which is applied in the field of cleaning and can solve problems such as inability to clean

Inactive Publication Date: 2018-10-12
HAINING MEIKANG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When some viscous substances or fine particles are accumulated on the filter screen, it cannot be cleaned by positive flushing. For this reason, we propose a cleaning method for the pre-filter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A cleaning method for a pre-filter, comprising the steps of:

[0015] S1. Turn the drain knob 90°, open the drain valve at the lower end, and stay for 30 seconds for positive flushing. After flushing, turn the drain knob 90° to restore the normal water state, and complete the positive flushing of the filter;

[0016] S2. After turning the knob counterclockwise for 3 turns, turn the drain knob 90°, open the lower drain valve, and stay for 20 seconds for reverse flushing. After flushing, turn the knob 3 turns to reset. At this time, the drain ball valve stays for 20 seconds and then Rotate the drain button to close the drain ball valve, restore the normal water condition, and complete the backwash of the filter;

[0017] S3. Remove the transparent cylinder with a wrench, take out the filter assembly from the cylinder, and continuously turn the knob to take out the filter assembly; clean the filter with cleaning fluid and a brush, and do not use strong acid or alkali clean...

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PUM

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Abstract

The invention discloses a pre-positioned filter cleaning method. The method comprises the following steps: a draining turn button is rotated with an angle being 90 DEG, a draining valve at a lower part is opened, a state is kept for 30 seconds, positive flushing is carried out, after flushing is completed, the draining turn button is rotated with the angle being 90 DEG C, and a normal water-usagestate is recovered. Compared with the prior art, a pre-positioned filter is mainly composed of a high-quality carbon steel cylindrical shell, a stainless steel wedge-type filter screen, a butterfly valve and a pollution-discharge apparatus. when the pre-positioned filter operates, the butterfly valve is in an opening state, water flows into the pre-positioned filter through an inlet, and is filtered through the filter screen and then flows to an outlet, and the dirt in water is intercepted by the filter screen. when the pre-positioned filter requires pollution discharge, the butterfly valve isclosed, a pollution-discharge valve is opened, the water is subjected to front half way filtering, a part of water directly flows into a human system, the other part of the water flows by the filterscreen from outside to inside, and is discharged through a sewage draining port. The effect of automatic flushing with a reverse direction of the filter screen and discharge of the impurities can be realized. A whole reverse-flushing pollution discharge process does not require closure of the system, and the on-line pollution discharge is realized.

Description

technical field [0001] The present invention relates to a cleaning method, more specifically, to a cleaning method of a pre-filter. Background technique [0002] The pre-filter is the first coarse filtration device for the whole house water, which can filter large particles such as sediment and rust in the tap water. The pre-filter is generally installed at the front end of the pipeline, so it is named after the word "pre-filter"; while "filter" refers to the basic principle of this type of equipment, usually a "T"-shaped structure. The left and right ends of the above "one horizontal" position are the water inlet and outlet respectively. The "one vertical" position below is the fuselage and the internal cylindrical filter, and the bottom end is the sewage outlet, which is controlled by a valve to open and close. [0003] When some viscous substances are accumulated on the filter screen or fine particles are embedded in the filter screen, it cannot be cleaned by positive f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/66B01D29/96B01D41/04
CPCB01D29/66B01D29/96B01D41/04
Inventor 游浩
Owner HAINING MEIKANG ENVIRONMENTAL PROTECTION TECH CO LTD
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